Know what I've heard...?

Worrying reports in the papers that police have so far failed to find any evidence connecting the young Pakistanis arrested last week with any terrorist threat. Which of course raises the question of just how reliable was the "intelligence" on which those arrests (at gunpoint!) were based. Clearly when dealing with the possibility of suicide bombers and such, the police have to err on the side of caution, but even so, you would think they would look for more than mere rumour and speculation before proceeding to an arrest. Maybe in due course we shall be told what they thought they knew, but the problem is, we've been here before. This would not be the first time the police have acted on what they considered to be solid intelligence, only for it to be proved groundless. So let's hope they don't start listening to tittle-tattle about you or me, eh?